The document discusses microservices and how streaming data is important for microservices. It describes what microservices are and why they are used. It then explains some of the challenges with microservices as systems grow in complexity, such as services overloading or causing distributed deadlocks. The document proposes using an event-driven data-centric approach with event sourcing, CQRS and streaming to help address these challenges by loosely coupling services and handling failures better.